All-optical image processing by means of a photosensitive nonlinear liquid-crystal film: edge enhancement and image addition-subtraction

被引：65

作者：

Shih, MY ^{[1
]}

Shishido, A ^{[1
]}

Khoo, IC ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

来源：

OPTICS LETTERS | 2001年 / 26卷 / 15期

关键词：

Doping (additives) - Dyes - Nematic liquid crystals - Nonlinear optics - Photosensitivity;

D O I：

10.1364/OL.26.001140

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate two simple yet efficient all-optical image-processing techniques that use nonlinear photosensitive dye-doped nematic liquid-crystal films, namely, edge enhancement and image addition-subtraction operations. These films require no external bias and function at much lower optical powers and shorter response times than other conventional methods. (C) 2001 Optical Society of America.

引用

页码：1140 / 1142

页数：3

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